Title:
【発明の名称】自動車用表示装置
Document Type and Number:
Japanese Patent JPH04500484
Kind Code:
A
Abstract:
PCT No. PCT/DE89/00420 Sec. 371 Date Mar. 11, 1991 Sec. 102(e) Date Mar. 11, 1991 PCT Filed Jun. 24, 1989 PCT Pub. No. WO90/03024 PCT Pub. Date Mar. 22, 1990.A display device (16) for motor vehicles features a graphic-capable and back-lighted transflective dot matrix LCD (19) the matrix dots of which can be activated electrically by way of driver stages, whereby they represent information (29) on the LCD by contrast in brightness between activated matrix dots (22) which have voltage applied to them and the other non-activated matrix dots. In order to obtain as contrasting as possible but dazzle-free information display in bright and in dark conditions, a contrast switch-over is effected on the LCD (19) in that the driver stages of the activated and the non-activated matrix dots can be switched over in dependence on the brightness in front of the LCD (19).
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Inventors:
Wiedemann, Werner
Elate, Walter
Elate, Walter
Application Number:
JP50664689A
Publication Date:
January 30, 1992
Filing Date:
June 24, 1989
Export Citation:
Assignee:
Robert Bosch GmbH
International Classes:
B60K35/00; G09G3/36; G09G5/10; (IPC1-7): B60K35/00; G09G3/36; G09G5/10
Domestic Patent References:
| JPS6142333B2 | 1986-09-20 | |||
| JPH021773B2 | 1990-01-12 |
Foreign References:
| EP0115575A2 | 1984-08-15 |
Attorney, Agent or Firm:
Toshio Yano (2 outside)